Aerobic Oxidative Sulfenylation of Pyrazolones and Pyrazoles Catalyzed by Metal-Free Flavin–Iodine Catalysis
摘要:
Two-component metal-free catalytic oxidative sulfenylation of pyrazolones with thiols has been achieved using the biomimetic flavin and iodine. The methodology is mild and eco-friendly, proceeds in the presence of air or molecular oxygen (1 atm) as the sole sacrificial reagent, and generates water as the only byproduct. The methodology was also extended to the sulfenylation of pyrazoles and electron-rich benzenes and afforded a series of thioethers in good yields.
Direct construction of sulfenylated pyrazoles catalyzed by I 2 at room temperature
作者:Shuang-Hong Hao、Li-Xia Li、Dao-Qing Dong、Zu-Li Wang
DOI:10.1016/s1872-2067(17)62901-2
日期:2017.10
An iodine-catalyzed sulfenylation of pyrazoles at room temperature is described, in which a variety of pyrazoles were well tolerated and the desired products were obtained in good to excellent yields. (C) 2017, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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